So, there's something I really don't understand...
BL drives the Mustang to the swamp parking lot. He leaves it there and takes off. After it's been there a few days, a ticket is stuck on the windshield that says the car has to be removed. His parents come and pick up the car.
Question: How did his parents know there was a ticket on the windshield? Were they maybe checking it every day?
Note also: BL might have been using the Mustang to keep his food supplies. He'd be able to camp out and get into the car once in a while to re-stock.